Japanese dish of thinly sliced raw fish (7)
I believe the answer is:
sashimi
'japanese dish of thinly sliced raw fish' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sashimi that I've seen before include "foreign dish" , "food in Japan" , "Japanese raw fish dish - his aims (anag)" , "fish food?" , "dish from Japan" .)